Check this out. A small application that runs in the background lets you disable caps, num and scroll lock keys and more.
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If you never want to use the Caps Lock key again, you have plenty of other options: You can disable or remap any key in Windows, use TabsLock to make it...
Is there a way to hide the taskbar so it will not pop up when you mouse over it without actually disabling the start menu? (accessing the start menu via the keyboard windows key rather than clicking.)
I have found a few things via google about hacking the registry to disable the start menu...